> For the complete documentation index, see [llms.txt](https://mind-expression-docs.gitbook.io/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mind-expression-docs.gitbook.io/home/how-to-guides/build-info-search-subjects/case-1.-data-usage.md).
# Case 1. Data Usage
### Before you begin
This tutorial requires a webhook setup. Add a test webhook URL `http://mock-webhook.mind.ai` to your webhook settings.
### Add a Subject
1. Click **Add Subject** on the Scope details page.
2. Select the `Info Search` tab.
3. Enter a Subject name.
4. Enter Query Statement which is the expected customer query as "How much data have I used on my account?"
5. Click **Recognize Statement** to get the Recognition Result. The **Recommended Statement** is the statement which is semantically related to more ontologies and can generally capture more statement structures with the same intent. To use the recommended statement, just tick the checkbox saying **Use Recommended Statement**.
6\. **Additional Query Statement to Recognize** may also be added but not required. This is used in case of multiple intents being expected to trigger this subject.
7\. Click **Add**.
### Build the Subject
1. Click **Add Component** in the Components panel.
2. Click **Parameter Bundle**.
3\. In the popup, enter a Parameter Bundle name as "Check Month" and a Parameter name as "Month". Set it as required.
4\. Click **Add**.
5\. In the Component Settings panel, stay with the `Single Value` tab.
6\. Enter the local binding key as "month".
7\. Click **Set up Entity Type**.
8\. In the popup, select the `System Entities` tab.
9\. Select `Datetime Entity`.
10\. Click **Submit**.
11\. Click **Save**.
12\. Click **Add Action** in the Conversation panel.
13\. Under Check for Parameter, click **Check**.
14\. Stay with the `Customer` tab.
15\. Enter the prompt as "For which month?"
16\. Click **Save**.
17\. Click **Add Action** in the Conversation panel.
18\. Under Completion of Parameter, click **Show response**.
19\. Select the `Webhook` tab.
20\. Choose a webhook URL `http://mock-webhook.mind.ai`to use from the dropdown and enter URL Parameter (domain path and/or query string) as `tutorial/data-usage?code=200`
**Webhook URL (Method: POST)**
\*\*BASE URL `` **` ``
\*\*URL PARAMETER `` **` `` tutorial/data-usage?code=200\`
**Response Body**
```
{
"month": "July",
"data-usage": "Your data plan is LTE+ (10G)\nYou have been using 4.3G.\nIf you want to change your mobile package, you can ask \"I want to change my mobile package\""
}
```
21\. Select the request method as `POST`. For the `POST` request, you can enter the Request Body if needed. Enter the Request Body.
**Request Body**
```
{
"month": "{{month}}"
}
```
22\. \*\*\*\* Select an error message display method as `Template` and select an action as `Terminate` to take in case of HTTP 400. If `Passthrough` is selected, the webhook response will be displayed without modification.
23\. Enter an error message that will be displayed to the customer.
```
Sorry, I am terminating the session.
```
24\. Keep the Mapping toggle on.
25\. Enter Key and JSONPath pairings for Result Mapping.
**Result Mapping Pair 1**
**KEY** `month`
**JSONPATH** `$.month`
**Result Mapping Pair 2**
**KEY** `data_usage`
**JSONPATH** `$.data-usage`
26\. Enter the template to show to the customer as a response.
```
Data usage for {{month}}
- {{{data_usage}}}
```
27\. Click **Save**.
28\. Click **Publish** to publish the Subject.
29\. To test the subject, click on the sandbox button on the right side of the screen and enter the query statement configured, in this case, `How much data have I used?`.
